<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div{

            width: 200px;
            height: 200px;
            /*border-style: solid;*/
            /*border-color: red;*/
            /*border-width: 10px;*/
            border:10px solid red;
            border-radius: 50%;


            /*border-left-style: solid;*/
            /*border-left-width: 10px;*/

            /*border-right-style: dashed;*/
            /*border-top-style: dashed;*/
            /*border-bottom-style: dashed;*/
            /*border-right-width: 5px;*/
            /*border-left:10px solid red;*/

        }


    </style>
</head>
<body>

<div>

</div>



</body>
</html>